4 ms·
There's plenty of aviation navigation methods aside from GPS, some of which will fit on a small processor. We've been doing optical/radar terrain map following
by imglorp 11y ago
There's plenty of aviation navigation methods aside from GPS, some of which will fit on a small processor. We've been doing optical/radar terrain map following for decades in cruise missiles for example. There's also inertial, celestial, VOR/NDB/TACAN, ADF and others. A smart navigator will use multiple methods; if one of its methods begins to disagree from the others, it can be downweighted.
- blacksmythe 11y ago>> inertial, ... A nice discussion of inertial navigation capability (https://news.ycombinator.com/item?id=10752294 https://news.ycombinator.com/item?id=10752294): Consumer grade MEMS ...are not sufficient for intertial navigation, ... At around the $2K-30K you get systems that can provide accurate navigation for up to 2 minutes or so. Aviation grade IMUs ... maximum horizontal position drift of 1.5km in the first hour of operation. These will run 100K and up.
- moron4hire 11y agoOne uses inertial systems to cover for disruptions in service of the other systems.